Hi,
On 06/02/2017 05:34 PM, Boris Brezillon wrote:
Document the bindings used for the Cadence DSI bridge.
Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com>
---
.../bindings/display/bridge/cdns,dsi.txt | 55 ++++++++++++++++++++++
1 file changed, 55 insertions(+)
create mode 100644
Documentation/devicetree/bindings/display/bridge/cdns,dsi.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,dsi.txt
b/Documentation/devicetree/bindings/display/bridge/cdns,dsi.txt
new file mode 100644
index 000000000000..770c5c5b1e93
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,dsi.txt
@@ -0,0 +1,55 @@
+Cadence DSI bridge
+==================
+
+The Cadence DSI bridge is a DPI to DSI bridge supporting up to 4 DSI lanes.
Is this a separate chip, or an IP integrated into SoCs? If it's the
latter, I don't think DPI on the its input side is the right term to
use. Maybe RGB would be more appropriate here.
+
+Required properties:
+- compatible: should be set to "cdns,dsi".
Would it be better to take a dw-hdmi like approach here? I.e, the
binding should be specific to the SoC that integrates this DSI
bridge?
+- reg: physical base address and length of the controller's registers.
+- interrupts: interrupt line connected to the DSI bridge.
+- clocks: DSI bridge clocks.
+- clock-names: must contain "pclk" and "sysclk".
+- phys: phandle link to the MIPI D-PHY controller.
+- phy-names: must contain "dphy".
+- #address-cells: must be set to 1.
+- #size-cells: must be set to 0.
+
+Required subnodes:
+- ports: Ports as described in Documentation/devicetree/bindings/graph.txt.
+ Currently contains a single input port at address 0 representing the DPI
+ input. Other ports will be added later to support the SDI inputs.
+ Port 0 should be connected to a DPI encoder output.
The output of the DSI bridge may be another bridge, which could be i2c
controlled. In that case, it won't be a child of the DSI bridge. For
such scenarios, we might want to define an output port for the bridge.
Thanks,
Archit
+- one subnode per DSI device connected on the DSI bus. Each DSI device should
+ contain a reg property encoding its address on the bus.
+
+Example:
+
+ dsi0: dsi@fd0c0000 {
+ compatible = "cdns,dsi";
+ reg = <0x0 0xfd0c0000 0x0 0x1000>;
+ clocks = <&pclk>, <&sysclk>;
+ clock-names = "pclk", "hclk";
+ interrupts = <1>;
+ phys = <&dphy1>;
+ phy-names = "dphy";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ dsi0_dpi_input: endpoint {
+ remote-endpoint = <&xxx_dpi_output>;
+ };
+ };
+ };
+
+ panel: dsi-dev@0 {
+ compatible = "<vendor,panel>";
+ reg = <0>;
+ };
+ };
+
--
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a Linux Foundation Collaborative Project
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